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128 lines
4.6 KiB
128 lines
4.6 KiB
//===-- internal_defs.h -----------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef SCUDO_INTERNAL_DEFS_H_
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#define SCUDO_INTERNAL_DEFS_H_
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#include "platform.h"
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#include <stdint.h>
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#ifndef SCUDO_DEBUG
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#define SCUDO_DEBUG 0
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#endif
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#define ARRAY_SIZE(A) (sizeof(A) / sizeof((A)[0]))
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// String related macros.
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#define STRINGIFY_(S) #S
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#define STRINGIFY(S) STRINGIFY_(S)
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#define CONCATENATE_(S, C) S##C
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#define CONCATENATE(S, C) CONCATENATE_(S, C)
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// Attributes & builtins related macros.
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#define INTERFACE __attribute__((visibility("default")))
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#define HIDDEN __attribute__((visibility("hidden")))
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#define WEAK __attribute__((weak))
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#define ALWAYS_INLINE inline __attribute__((always_inline))
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#define ALIAS(X) __attribute__((alias(X)))
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#define FORMAT(F, A) __attribute__((format(printf, F, A)))
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#define NOINLINE __attribute__((noinline))
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#define NORETURN __attribute__((noreturn))
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#define LIKELY(X) __builtin_expect(!!(X), 1)
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#define UNLIKELY(X) __builtin_expect(!!(X), 0)
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#if defined(__i386__) || defined(__x86_64__)
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// __builtin_prefetch(X) generates prefetchnt0 on x86
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#define PREFETCH(X) __asm__("prefetchnta (%0)" : : "r"(X))
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#else
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#define PREFETCH(X) __builtin_prefetch(X)
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#endif
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#define UNUSED __attribute__((unused))
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#define USED __attribute__((used))
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#define NOEXCEPT noexcept
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namespace scudo {
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typedef unsigned long uptr;
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typedef unsigned char u8;
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typedef unsigned short u16;
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typedef unsigned int u32;
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typedef unsigned long long u64;
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typedef signed long sptr;
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typedef signed char s8;
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typedef signed short s16;
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typedef signed int s32;
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typedef signed long long s64;
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// The following two functions have platform specific implementations.
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void outputRaw(const char *Buffer);
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void NORETURN die();
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#define RAW_CHECK_MSG(Expr, Msg) \
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do { \
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if (UNLIKELY(!(Expr))) { \
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outputRaw(Msg); \
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die(); \
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} \
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} while (false)
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#define RAW_CHECK(Expr) RAW_CHECK_MSG(Expr, #Expr)
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void NORETURN reportCheckFailed(const char *File, int Line,
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const char *Condition, u64 Value1, u64 Value2);
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#define CHECK_IMPL(C1, Op, C2) \
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do { \
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scudo::u64 V1 = (scudo::u64)(C1); \
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scudo::u64 V2 = (scudo::u64)(C2); \
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if (UNLIKELY(!(V1 Op V2))) { \
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scudo::reportCheckFailed(__FILE__, __LINE__, \
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"(" #C1 ") " #Op " (" #C2 ")", V1, V2); \
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scudo::die(); \
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} \
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} while (false)
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#define CHECK(A) CHECK_IMPL((A), !=, 0)
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#define CHECK_EQ(A, B) CHECK_IMPL((A), ==, (B))
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#define CHECK_NE(A, B) CHECK_IMPL((A), !=, (B))
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#define CHECK_LT(A, B) CHECK_IMPL((A), <, (B))
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#define CHECK_LE(A, B) CHECK_IMPL((A), <=, (B))
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#define CHECK_GT(A, B) CHECK_IMPL((A), >, (B))
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#define CHECK_GE(A, B) CHECK_IMPL((A), >=, (B))
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#if SCUDO_DEBUG
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#define DCHECK(A) CHECK(A)
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#define DCHECK_EQ(A, B) CHECK_EQ(A, B)
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#define DCHECK_NE(A, B) CHECK_NE(A, B)
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#define DCHECK_LT(A, B) CHECK_LT(A, B)
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#define DCHECK_LE(A, B) CHECK_LE(A, B)
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#define DCHECK_GT(A, B) CHECK_GT(A, B)
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#define DCHECK_GE(A, B) CHECK_GE(A, B)
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#else
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#define DCHECK(A)
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#define DCHECK_EQ(A, B)
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#define DCHECK_NE(A, B)
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#define DCHECK_LT(A, B)
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#define DCHECK_LE(A, B)
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#define DCHECK_GT(A, B)
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#define DCHECK_GE(A, B)
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#endif
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// The superfluous die() call effectively makes this macro NORETURN.
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#define UNREACHABLE(Msg) \
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do { \
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CHECK(0 && Msg); \
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die(); \
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} while (0)
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} // namespace scudo
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#endif // SCUDO_INTERNAL_DEFS_H_
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